The announcement came with little fanfare, at the end of a PR document announcing other wireless earbuds and open-ear headphones, but Android Police spotted it. Here are the older models getting the update:

Whether you’re a fan of Sony’s smartphone design or couldn’t care less, the near bezel-less aesthetic has become more commonplace. You won’t find that aesthetic on the Xperia XA2, Xperia XA2 Ultra, and Xperia L2, …

Updating older headphones with new functionality is an interesting idea. We see OEMs add new features via software updates to smartphones, smart TVs, and cars, so it makes sense for a company to go back and do it with something like headphones. Assistant in headphones is something of a new trend, but it certainly seems to be gaining traction. It would be a great move if other companies followed Sony’s lead.

Once the headphones are updated, they’ll be able to use Assistant when paired with an Android device. That will allow users to ask questions, request music, or make calls without touching the phone. If you want to see Assistant on headphones in action, check out our review of the Bose QC35 II.